No. 64] DiPTERA OF CONNECTICUT : taxono:my 235 



jnedian stripe entire, the narrower lateral stripes slightly interrupted. 

 5 . L. 11 mm.; w. 12-12.5 mm. 



(June- Aug.) Out., Que., Nfd., Me., N. H., Mass., westw. to Alta. (Hudsonian, 

 high Canadian). 



N. wyalusingensis (Dtz.) 



1918. Pachyrhina wyalusingensis Dietz; Trans. Amer. Ent. See, 

 44:134-135. 



Figs. — Dietz, Ibid., pi. 5, fig. 16 (wing), pi. 7, fig. 32 (hyp.). 



Close to xanthostigma. Lateral ends of suture blackened. $ . L. 

 14 mm. ; w. 12 . 5 mm. 



(Aug.) Pa. 



Type material now reduced to fragments and nothing can be af- 

 firmed as to its further relationships (Rogers). 



N. xanlhostigma (Lw.) 



1864. PacJiyrrJdna xwnthostigma Loew; Berlin. Ent. Zeitschr., 8:65, 



Fig.— Alexander, Cfls. N. Y., 1, pi. 44, fig. 201 (wing) : 1919. 



General coloration of thorax and abdomen polished orange. Oc- 

 cipital brand very large, embracing also the posterior vertex; vertical 

 tubercle intense orange. Wings strongly suffused with yellow, the 

 costal and apical portions more saturated. Abdominal tergites with 

 lateral rows of black dashes. $. L. 12-13 mm.; w. 12.5-13 mm. 

 $ . L. 15-16 mm. ; w, 13 - 14 mm. 



(June-Sept.) Ont., Que., Me., N. H., Vt., Mass., N. Y., N. J., Pa., westw. to Til., 

 southw. to S. C. and Tenn. 



Connecticut. — East River (Ely) ; New Haven, July 20, 1904 (determined by John- 

 son as euccra) (W. E. B.) ; Orange, July 14, 1924; Stonington, July 26, 1906 

 (J. A. H.): Wading River, July 25, 1914 (G. P. E.) ; Windsor, Aug. 6, 1929 

 (C.P.A.). 



Tipula Linnaeus 



1758. TipuU Linnaeus: Syst. Nat., Ed. 10:585. 



The genus Tipula includes approximately one-sixth of all the 

 crane-flies of the World and very nearly one-fourth of all those con- 

 sidered in the present treatment. In this vast series of species there 

 is to be found a considerable range in size but scarcely any differences 

 of importance in the w^ing venation. The chief specific characters lie 

 in the nature of the wing-pattern and in the structure of the male 

 hypopygium. Various attempts have been made in the past to divide 

 this cumbersome genus into smaller groups, and, more recently, into 

 subgenera. A notable paper by Edwards (Ann. Mag. Nat. Hist. 

 (10) 8:73-82; 1931) is a landmark in the discovery and correlation 

 of characters suitable for the separation of the various subgeneric 

 groups. 



